Scope of the Interlaboratory Proficiency Testing

The scope of this proficiency testing is the evaluation of the performance of laboratories for the determination of the metals in contaminated soils.

Metals

Antimony (Sb)(50 - 500 mg/Kg)

Arsenic (As)(50 - 500 mg/Kg)

Beryllium (Be)(50 - 500 mg/Kg)

Cadmium (Cd)(50 - 500 mg/Kg)

Chromium (Cr)(50 - 500 mg/Kg)

Cobalt (Co)(50 - 500 mg/Kg)

Copper (Cu)(50 - 500 mg/Kg)

Iron (Fe)(10 - 100 g/Kg)

Manganese (Mn)(100 - 2000 mg/Kg)

Mercury (Hg)(1 - 35 mg/Kg)

Molybdenum (Mo)(30 - 300 mg/Kg)

Nickel (Ni)(50 - 500 mg/Kg)

Lead (Pb)(50 - 500 mg/Kg)

Selenium (Se)(50 - 500 mg/Kg)

Thallium (Tl)(50 - 500 mg/Kg)

Tin (Sn)(50 - 500 mg/Kg)

Vanadium (V)(50 - 500 mg/Kg)

Zinc (Zn)(100 - 1000 mg/Kg)

Proficiency test item:

1 x 20g of contaminated soils ready to use.

ANALYSIS:

The sample digestion must be used methods for the determination of the “Pseudo total” concentration (ex. ISO 11466, EPA 3051a, EPA 3050b or other equivalent methods).
ANALYSIS: The test sample should be analysed under the same conditions and with the same procedures used for the routine samples in the laboratory including the quality control procedures.

For each measurand shall be reported the result of a replica.
ADDITIONAL RESULTS: Each participant can submit up to 5 results* for the same analyte, thus obtaining an evaluation of laboratory performance for different operators, instruments and/or test methods (e.g. operator 1/operator 2, instrument A/instrument B, etc..).

Request a quote

Download and complete the Application Form, selecting for each matrix, the measurands and the period in which you want to participate. Send it by email (sales@qualitychecksrl.com) or by FAX (0039 0656562874).

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*: Only one result submitted by the laboratory will be included in the statistical treatment of data for the calculation of the Assigned Value and statistics of data of the analyte, to avoid that a single laboratory has a different statistical weight, depending on the number of its submitted results. The additional results are evaluated by assigning z-score values, using the Assigned Value and the Standard Deviation for Proficiency Assessment obtained from statistical treatment.